Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3788
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations, Weapons Technology and Nuclear Warfare
Regions Africa, Atlantic, East Asia, Europe, Latin America, Mediterranean, Middle East, North America, Pacific, South Asia
Countries Afghanistan, Albania, Argentina, Armenia, Australia, Azores, Belgium, Bulgaria, Canada, Canary Islands, Ceylon, Chile, China, Cyprus, Czechoslovakia, Denmark, Dutch East Indies, Egypt, England, Finland, Formosa, France, Germany, Great Britain, Greece, Guinea, Holland, Hungary, India, Indochina, Ireland, Italy, Japan, Korea, Lebanon, Malaya, Malta, Marshall Islands, Mongolia, Morocco, Netherlands, Norway, Pakistan, Palestine, Persia, Philippines, Poland, Portugal, Romania, Russia, Siam, Singapore, South Africa, Soviet Union, Spain, Sudan, Sweden, Switzerland, Syria, Togo, Tunisia, Turkey, United States of America, Yugoslavia
Document Type Signals Intelligence
Organisations Foreign Office, League of Nations, Security Service, United Nations, Government Code and Cypher School
People Edward Bridges, Alexander Cadogan, Archibald Clark Kerr, Francisco Franco, Charles de Gaulle, Adolf Hitler, Ramsay MacDonald, Benito Mussolini, Franklin Delano Roosevelt, Josef Stalin


A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following reports: intelligence reports submitted by C (the head of MI6) to the Prime Minister; part of a daily supply of intelligence to the PM, mainly consisting of diplomatic decrypts (BJs, for the full series see HW 12) and Naval Headlines.


naval intelligence, suicide attacks, Japanese navy, torpedo boats, aerial attacks on ships, convoys, diplomatic intelligence, colonial independence movements, Soviet-Japanese relations, public statements, Allied strategy, Pacific War, Indian independence, political intelligence, neutrality, peace proposals, diplomatic missions, surrender, public opinion, Japanese war effort, Soviet foreign policy, military shortages, food supplies, Potsdam Conference, Potsdam Agreement, Allied powers, Greek politics, captured equipment, German U-boats, politicians, French foreign policy, Spanish foreign policy, Spanish politics, communications interception, atomic warfare, nuclear weapons, effects of bombing, casualties, Anglo-Portuguese relations, aerial attacks, Soviet air force, civil unrest, trade unions, political pressure for peace, French government, Greek government, Soviet-Turkish relations, American foreign policy, United States government, communism, post-war planning, territorial concessions, military bases, information sharing, Japanese withdrawal, Japanese-occupied territory, demolitions, deception, ideology, armistice, Chinese Nationalists, Chinese foreign policy, disposal of documents, poison gas

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